METHOD FOR WARMING-UP A STEAM TURBINE

摘要

Method involves increasing of counter pressure at outlet side of high pressure turbine section (2) and opening of a valve (6) arranged in front of the entrance (13) of the high pressure turbine section, as soon as the conductivity of the steam produced in steam generator falls below a tolerance value. Closing of steam valve (14) is arranged between high pressure turbine section and medium pressure turbine section (3). Control of revolution of rotor of high pressure turbine section takes place on a value under nominal speed. Lowering of the counter pressure takes place as soon as conductance of steam generate in steam generator falls below a limit value. Heating of medium pressure turbine section or low pressure turbine section (4) takes by generated steam from the steam generator.